I have an array with three values, and 1 seperate value all acquired from a form.
I am trying to multiply the top number (3) with the others (12, 3 and 31) and add those up.
This is what i tried:
HTML:
<p>Aantal sets: <span id="dynamicSet"></span></p>
<table id="resultTable" cellpadding="1" cellspacing="1" border="1">
<tr>
<th scope="col"></th>
<th scope="col">Hoeveelheid</th>
<th scope="col">Gewicht x KG</th>
</tr>
<tr>
<td>1</td>
<td class="HoeveelheidField"><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1" ></td>
<td class="GewichtField"><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1" ></td>
</tr>
<tr>
<td>2</td>
<td class="HoeveelheidField"><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1" ></td>
<td class="GewichtField"><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1" ></td>
</tr>
<tr>
<td>3</td>
<td class="HoeveelheidField"><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1" ></td>
<td class="GewichtField"><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1" ></td>
</tr>
</table>
And my JS:
var HoeveelheidArr=[];
var total = 0;
const setAmount = document.getElementById("dynamicSet").innerHTML;
function getData(){
$('#resultTable .HoeveelheidField > input ').each(function() {
HoeveelheidArr.push($(this).val());
});
console.log(HoeveelheidArr);
HoeveelheidArr.forEach(function getReps (value) {
console.log(value);
for(var i = 0; i < HoeveelheidArr.length; i++){
total += value[i] * setAmount;
}
});
console.log(total);
}
However as you may see in the picture i keep getting Not a Number back from the console. Despite the console showing all of them appear as ints? Do you see what I do wrong? I also tried:
parseInt(value[i])
Your setAmount variable is a string from innerHTML.
Use parseInt() on both variables:
total += parseInt(value[i]) * parseInt(setAmount);
Update
After a deeper review, you got a couple of other problems.
Your setAmount variable is "", because it's not set in the HTML.
You are looping through the HoeveelheidArr twice
You should use value instead of value[i]
I made a working example:
var HoeveelheidArr = [];
var total = 0;
const setAmount = document.getElementById("dynamicSet").innerHTML || 0;
function getData() {
HoeveelheidArr = [];
total = 0;
$('#resultTable .HoeveelheidField > input').each(function() {
HoeveelheidArr.push($(this).val() || 0);
});
console.log("HoeveelheidArr:", HoeveelheidArr);
for (var i = 0; i < HoeveelheidArr.length; i++) {
console.log("setAmount:", setAmount);
total += parseInt(HoeveelheidArr[i]) * parseInt(setAmount);
}
console.log("Total:", total);
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<p>Aantal sets: <span id="dynamicSet">1</span></p>
<table id="resultTable" cellpadding="1" cellspacing="1" border="1">
<tr>
<th scope="col"></th>
<th scope="col">Hoeveelheid</th>
<th scope="col">Gewicht x KG</th>
</tr>
<tr>
<td>1</td>
<td class="HoeveelheidField">
<INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1">
</td>
<td class="GewichtField">
<INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1">
</td>
</tr>
<tr>
<td>2</td>
<td class="HoeveelheidField">
<INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1">
</td>
<td class="GewichtField">
<INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1">
</td>
</tr>
<tr>
<td>3</td>
<td class="HoeveelheidField">
<INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1">
</td>
<td class="GewichtField">
<INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1">
</td>
</tr>
</table>
<button onclick="getData()">Test</button>
why are you using value[i] value is not an array it's just a number.
console.log([value[i]);
the value[1] and value[2] is undefined that why you are getting NaN
If you tell me what do you want to do through this code, I can correct it
Related
How can I make sure that the second part of function runs, calculating the columns and showing the result at the end of each row?
function sum_row_qty(el, poOrigin) {
let rowTotal = 0
if (el) {
let parent = el.closest("tr")
parent.querySelectorAll('.size_qty').forEach(function(e) {
rowTotal += parseFloat(e.value);
})
if (rowTotal) {
parent.querySelector('.qty').value = rowTotal;
}
} else {
document.querySelectorAll("#tableRows > tr > td:first-child input").forEach(sum_row_qty);
}
}
<table class="table table-hover table-vcenter" id="dtable">
<thead>
<tr>
<th style="width:4%; text-align: left">OS</th>
<th style="width:4%">XS</th>
<th style="width:4%">Total</th>
</tr>
</thead>
<tbody id="tableRows">
<tr>
<td><input class="size_qty" type="number" min="0" name="numberInputs" value="14" onchange="sum_row_qty(this);"></td>
<td><input class="size_qty" type="number" min="0" name="numberInputs" value="0" onchange="sum_row_qty(this)"></td>
<td><input type="number" min="0" class="qty" name="numberInputs" value="" readonly="true"></td>
</tr>
<tr>
<td><input class="size_qty" type="number" min="0" name="numberInputs" value="14" onchange="sum_row_qty(this);"></td>
<td><input class="size_qty" type="number" min="0" name="numberInputs" value="0" onchange="sum_row_qty(this);"></td>
<td><input type="number" min="0" class="qty" name="numberInputs" value="" readonly="true"></td>
</tr>
</tbody>
</table>
Here is the answer proposed by a gentleman on another platform:
function sumInputs(row) {
const inputsArr = [...row.querySelectorAll('.size_qty')];
return inputsArr.reduce((total, {
value
}) => total += parseFloat(value), 0);
}
function sum_row_qty(el) {
if (el) {
const currentRow = el.closest("tr");
currentRow.querySelector('.qty').value = sumInputs(currentRow);
}
}
tableRows.querySelectorAll('tr').forEach(row => {
row.querySelector('.qty').value = sumInputs(row);
});
<table class="table table-hover table-vcenter" id="dtable">
<thead>
<tr>
<th style="width:4%; text-align: left">OS</th>
<th style="width:4%">XS</th>
<th style="width:4%">Total</th>
</tr>
</thead>
<tbody id="tableRows">
<tr>
<td><input class="size_qty" type="number" min="0" name="numberInputs" value="14" onchange="sum_row_qty(this);"></td>
<td><input class="size_qty" type="number" min="0" name="numberInputs" value="0" onchange="sum_row_qty(this)"></td>
<td><input type="number" min="0" class="qty" name="numberInputs" value="" readonly="true"></td>
</tr>
<tr>
<td><input class="size_qty" type="number" min="0" name="numberInputs" value="14" onchange="sum_row_qty(this);"></td>
<td><input class="size_qty" type="number" min="0" name="numberInputs" value="0" onchange="sum_row_qty(this);"></td>
<td><input type="number" min="0" class="qty" name="numberInputs" value="" readonly="true"></td>
</tr>
</tbody>
</table>
I am attempting to get the input filled by the user from a table. The table has but 2 columns how can I get the input from these? I want to have a different var for each column of items? The table changed size dynamically by a slider which controls the rows. This is my table:
<div id="table-gen">
<p>Als je dezelfde herhaling doet voor alle sets, kan je slechts één waarde invullen: bvb. voor 4 sets
slechts éénmaal 10 invoeren voor de herhalingen. Dit wordt dan automatisch 4 x 10.</p>
<table id="resultTable" cellpadding="1" cellspacing="1" border="1">
<tr>
<th scope="col"></th>
<th scope="col">Hoeveelheid</th>
<th scope="col">Gewicht x KG</th>
</tr>
<tr>
<td>1</td>
<td><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1" ></td>
<td><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1" ></td>
</tr>
<tr>
<td>2</td>
<td><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1" ></td>
<td><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1" ></td>
</tr>
<tr>
<td>3</td>
<td><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1" ></td>
<td><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1" ></td>
</tr>
</table>
</div>
this is what it looks Like:
I tried the following:
var col1_Array = $('#resultTable td:nth-child(1)').map(function () {
return $(this).text();
}).get();
var col2_Array = $('#resultTable td:nth-child(2)').map(function () {
return $(this).text();
}).get();
this only gives me the very first column and an emptry string. I try to upload it to firebase which goes well. Except the first column is the defeault number, after i change the size of my table it somehow doesnt register.
function writeData(){
firebase.database().ref("Exercise").set({
nameExercise: exerciseName.value,
setAm: setAmount,
setReps:col1_Array,
weight:col2_Array,
})
}
How can i best go around this dynamically changing table? Is it better to reconstruct this table to divs? I feel like im digging a rabbithole at this point..
Add classes HoeveelheidField and GewichtField to td's
<tr>
<td>1</td>
<td class="HoeveelheidField"><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1" ></td>
<td class="GewichtField"><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1" ></td>
</tr>
and then in order to get all values
function getData(){
$('#resultTable .HoeveelheidField > input ').each(function() {
HoeveelheidArr.push($(this).val());
});
$('#resultTable .GewichtField > input').each(function() {
Gewicht.push($(this).val());
});
Run this snippet to test if it works
var HoeveelheidArr=[];
var Gewicht=[]
function getData(){
$('#resultTable .HoeveelheidField > input ').each(function() {
HoeveelheidArr.push($(this).val());
});
$('#resultTable .GewichtField > input').each(function() {
Gewicht.push($(this).val());
});
console.log(HoeveelheidArr);
console.log(Gewicht);
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>
<table id="resultTable" cellpadding="1" cellspacing="1" border="1">
<tr>
<th scope="col"></th>
<th scope="col">Hoeveelheid</th>
<th scope="col">Gewicht x KG</th>
</tr>
<tr>
<td>1</td>
<td class="HoeveelheidField"><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1" ></td>
<td class="GewichtField"><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1" ></td>
</tr>
<tr>
<td>2</td>
<td class="HoeveelheidField"><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1" ></td>
<td class="GewichtField"><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1" ></td>
</tr>
<tr>
<td>3</td>
<td class="HoeveelheidField"><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1" ></td>
<td class="GewichtField"><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1" ></td>
</tr>
</table>
<button onclick="getData()">Get Data</button>
First, you should target the input in order to map the values.
Then, Since an jQuery lookup like $("#resultTable td:nth-child(2) input") returns a jQuery collection of elements, you have to apply the .get() on it before mapping... Not after.
Third, in the selectors, td:nth-child(n) is not zero based.
Fourth, in map(), the argument is a function. That function needs an argument in order to return something from it. Notice the input in .map(function (input) {
I made it so the arrays are refreshed on input change... But I don't know if that is relevant to you. Anyway, you should use an event to achieve this. Also notice the use of delegation, since your table is dynamically changing...
var col1_Array, col2_Array;
$(document).on("change","#resultTable td input", function () {
col1_Array = $("#resultTable td:nth-child(2) input")
.get()
.map(function (input) {
return input.value;
});
col2_Array = $("#resultTable td:nth-child(3) input")
.get()
.map(function (input) {
return input.value;
});
console.log(col1_Array, col2_Array);
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="table-gen">
<p>Als je dezelfde herhaling doet voor alle sets, kan je slechts één waarde invullen: bvb. voor 4 sets
slechts éénmaal 10 invoeren voor de herhalingen. Dit wordt dan automatisch 4 x 10.</p>
<table id="resultTable" cellpadding="1" cellspacing="1" border="1">
<tr>
<th scope="col"></th>
<th scope="col">Hoeveelheid</th>
<th scope="col">Gewicht x KG</th>
</tr>
<tr>
<td>1</td>
<td><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1"></td>
<td><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1"></td>
</tr>
<tr>
<td>2</td>
<td><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1"></td>
<td><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1"></td>
</tr>
<tr>
<td>3</td>
<td><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1"></td>
<td><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1"></td>
</tr>
</table>
</div>
CodePen
I am trying to get the input from a table form. The table has but 2 columns how can I get the input from these? I want to have a different var for each column of items? Should I use an array? This is my table:
<table id="resultTable" cellpadding="1" cellspacing="1" border="1">
<tr>
<th scope="col"></th>
<th scope="col">Hoeveelheid</th>
<th scope="col">Gewicht x KG</th>
</tr>
<tr>
<td>1</td>
<td><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1" ></td>
<td><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1" ></td>
</tr>
<tr>
<td>2</td>
<td><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1" ></td>
<td><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1" ></td>
</tr>
<tr>
<td>3</td>
<td><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1" ></td>
<td><INPUT TYPE="NUMBER" MIN="0" MAX="10" STEP="1" ></td>
</tr>
</table>
What is the best way to get around this? I tried to select by tag name.
Here a quick one for jQuery:
Replace tableid with the id of your table
var col1_Array = $('#tableid td:nth-child(1)').map(function(){
return $(this).text();
}).get();
var col2_Array = $('#tableid td:nth-child(2)').map(function(){
return $(this).text();
}).get();
I have table with quantity cell when change quantity it need to multiply with other parent td value.and sum the column values .
(i.e) if i change quantity to 2 then the parent rows need multiply by 2 & columns get value get added
I done all the calculation part without input in td now i added input and the calculation got affected i debug and checked it i don't know what would be the problem
Here my fiddle:
https://jsfiddle.net/hahkarthick/57zpk59k/3/
$(document).ready(function(){
$('.quantity').on('change, keyup',function(){
var val=$(this).val();
console.log(val)
// To avoid auto inc while pressing arrow keys
var preVal =$(this).data('val');
$(this).data('val',val);
//To avoid auto inc while pressing arrow keys //
if(val =='' || isNaN(val) || val < 1 || val == undefined){
val = 1;
}
$(this).siblings().each(function(){
var tbvalue=$(this).data("val");
var result= parseInt(tbvalue)*parseInt(val);
$(this).text(result);
});
autoSum();
});
autoSum();
});
function autoSum(){
for (var i = 1; i <= 4; i++) {
var sum = 0;
var tdBoxes = $('.auto_sum>tbody>tr>td>input:nth-child(' + i + ')');
for(var j=0; j<tdBoxes.length-1;j++)
{
var value = $(tdBoxes[j]).val();
sum += (value == undefined || value == "")? 0 : parseInt(value);
}
// set total in last cell of the column
$('.auto_sum>tbody>tr>td>input:nth-child(' + i + ')').last().html(sum);
// $('.auto_sum>tbody>tr>td:nth-child(' + i + ')').last().toggleClass('total');
}
}
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<div class="container">
<h2>Table calculation</h2>
<p>Calculaton</p>
<table class="auto_sum table table-hover">
<thead>
<tr>
<th>value1</th>
<th>value2</th>
<th>value3</th>
<th>Quantity</th>
</tr>
</thead>
<tbody>
<tr>
<td><input type="number" data-val="" value="20" name=""></td>
<td><input type="number" data-val="" value="10" name=""></td>
<td><input type="number" data-val="" value="10" name=""></td>
<td><input class="quantity" type="number" name=""></td>
</tr>
<tr>
<td><input type="number" data-val="" value="5" name=""></td>
<td><input type="number" data-val="" value="6" name=""></td>
<td><input type="number" data-val="" value="12" name=""></td>
<td><input class="quantity" type="number" name=""></td>
</tr>
<tr>
<td><input type="number" data-val="" value="45" name=""></td>
<td><input type="number" data-val="" value="23" name=""></td>
<td><input type="number" data-val="" value="22" name=""></td>
<td><input class="quantity" type="number" name=""></td>
</tr>
<tr class="total">
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
</tbody>
</table>
</div>
Hope this helps...
<div class="container">
<h2>Table calculation</h2>
<p>Calculaton</p>
<table class="auto_sum table table-hover" id="sum_table">
<thead>
<tr class="title">
<th>value1</th>
<th>value2</th>
<th>value3</th>
<th>Quantity</th>
</tr>
</thead>
<tbody>
<tr>
<td><input type="text" data-val="" value="20[2]" name=""></td>
<td><input type="number" data-val="" value="10" name=""></td>
<td><input type="number" data-val="" value="10" name=""></td>
<td><input class="quantity" type="number" name=""></td>
</tr>
<tr>
<td><input type="number" data-val="" value="5" name=""></td>
<td><input type="number" data-val="" value="6" name=""></td>
<td><input type="number" data-val="" value="12" name=""></td>
<td><input class="quantity" type="number" name=""></td>
</tr>
<tr>
<td><input type="number" data-val="" value="45" name=""></td>
<td><input type="number" data-val="" value="23" name=""></td>
<td><input type="number" data-val="" value="22" name=""></td>
<td><input class="quantity" type="number" name=""></td>
</tr>
<tr class="totalColumn">
<td class="totalCol">Total:</td>
<td class="totalCol">Total:</td>
<td class="totalCol">Total:</td>
<td></td>
</tr>
</tbody>
</table>
</div>
<script>
$(document).ready(function(){
$('.quantity').on('change',function(){
var val=$(this).val();
console.log(val)
// To avoid auto inc while pressing arrow keys
var preVal =$(this).data('val');
$(this).data('val',val);
//To avoid auto inc while pressing arrow keys //
if(val =='' || isNaN(val) || val < 1 || val == undefined){
val = 1;
}
$(this).parent().siblings().each(function(){
var oldval = $(this).find('input').val();
var arr = oldval.split("[");
console.log(arr);
//var newval = val * oldval;
var newval = (val * parseFloat(arr[0])).toFixed(2);
console.log(newval);
if(arr.length > 1) {
newval = newval + "[" + arr[1];
}
$(this).find('input').val(newval);
});
autoSum();
});
autoSum();
});
function autoSum(){
var $dataRows=$("#sum_table tr:not('.total, .title')");
var totals=[0,0,0];
$dataRows.each(function() {
$(this).find('input').each(function(i){
totals[i]+=parseFloat( $(this).val());
});
});
$("#sum_table td.totalCol").each(function(i){
$(this).html("total:"+totals[i]);
});
}
</script>
I have updated the fiddle.
I have made following changes :-
$('.quantity').on('change, keyup',function(){ changed to $('.quantity').on('keyup',function(){
$(this).siblings().each(function(){ changed to $(this).parent().siblings().each(function(){
var tbvalue=$(this).data("val"); changed to var tbvalue=$(this).find("input[type=number]").val();
Hope it helps.
Im a beginner of js... I want to show a list of students. With this, ppl can edit directly 2 values of grade in input box, and avg grade is auto caculate and inport to 3rd input box. I could do with 1 ppl, but 2 or more I dont know how to do.
Could anyone help me?
This is my code: https://jsfiddle.net/sxxfrppo/
JS:
$(document).ready(function() {
$('[id^=grade]').on('change', function() {
var grade = 0;
$('[id^=grade]').each(function(index) {
grade += parseFloat($(this).val() ? $(this).val() : 0);
});
var avggrade = $('#avg').val(grade.toFixed(2)/2);
});
});
Element.id should be unique in doucment. Substitute duplicate ids beginning with grade, and avg with classNames at html. Use [class*=grade] selector to select all elements where grade is included in className, $(this).closest("tr") to select parent element where change event occurs.
You can also replace ternary $(this).val() ? $(this).val() : 0 with +this).value where + operator converts string .value of input element to number.
$(document).ready(function() {
var grades = $("[class*=grade]")
grades.on("change", function() {
var grade = 0;
var tr = $(this).closest("tr");
$(grades, tr).each(function(index) {
grade += +this.value;
});
var avggrade = $(".avg", tr).val(grade.toFixed(2) / 2);
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table class="table table-striped table-bordered table-hover">
<thead class="">
<tr>
<th width="40" class="text-center">
#
</th>
<th>
Name
</th>
<th>
Grade 1
</th>
<th>
Grade 2
</th>
<th>
AVG
</th>
</tr>
</thead>
<tbody>
<tr>
<td></td>
<td>
Luna
</td>
<td>
<input class="form-control text-right grade1" type="number" min="0" max="10" step="0.01" name="grade1" value="" />
</td>
<td>
<input class="form-control text-right grade2" type="number" min="0" max="10" step="0.01" name="grade2" value="" />
</td>
<td>
<input class="form-control text-right avg" type="number" min="0" max="10" step="0.01" name="avg" value="" />
</td>
</tr>
<tr>
<td></td>
<td>
John
</td>
<td>
<input class="form-control text-right grade1" type="number" min="0" max="10" step="0.01" name="grade1" value="" />
</td>
<td>
<input class="form-control text-right grade2" type="number" min="0" max="10" step="0.01" name="grade2" value="" />
</td>
<td>
<input class="form-control text-right avg" type="number" min="0" max="10" step="0.01" name="avg" value="" />
</td>
</tr>
</tbody>
</table>
jsfiddle https://jsfiddle.net/sxxfrppo/1/
Using so many id's makes it quite complicated. It will only get a lot harder when the number of rows are a lot more.
To make your code flexible, you should be using a class, and some basic jQuery selector functions like closest and find.
We can assign a class "grade" to all grade input boxes and a class "avg" to the average input box.
Refer to this: https://jsfiddle.net/czvf7L9f/9/
<tbody>
<tr>
<td></td>
<td>
Luna
</td>
<td>
<input class="form-control text-right grade" type="number" min="0" max="10" step="0.01" name="grade1" value="" /> <!-- Add grade class -->
</td>
<td>
<input class="form-control text-right grade" type="number" min="0" max="10" step="0.01" name="grade2" value="" /> <!-- Add grade class -->
</td>
<td>
<input class="form-control text-right avg" type="number" min="0" max="10" step="0.01" name="avg" value="" /> <!-- Add avg class -->
</td>
</tr>
<tr>
<td></td>
<td>
John
</td>
<td>
<input class="form-control text-right grade" type="number" min="0" max="10" step="0.01" name="grade1" value="" /> <!-- Add grade class -->
</td>
<td>
<input class="form-control text-right grade" type="number" min="0" max="10" step="0.01" name="grade2" value="" /> <!-- Add grade class -->
</td>
<td>
<input class="form-control text-right avg" type="number" min="0" max="10" step="0.01" name="avg" value="" /> <!-- Add avg class -->
</td>
</tr>
$(function(){
$(".grade").on("change", function() {
var no_of_boxes = 0;
var total = 0;
$(this).closest('tr').find('.grade').each(function() {
if ($(this).val()) {
no_of_boxes++;
total += parseFloat($(this).val())
}
});
var avg = parseFloat(total/no_of_boxes);
$(this).closest('tr').find('.avg').val(avg);
});
});